Convex nail file



FIG. 1 is a perspective view of a convex nail file;

FIG. 2 is a first side view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is an inverted second side view thereof;

FIG. 5 is a bottom plan view of FIGS. 1-3; and,

FIG. 6 is an end view thereof. 

The ornamental design for a convex nail file, as shown and described. 